What are the implications of different button sizes?

1. Does button size matter?
2. Should all buttons be the same size?
3. What is the ideal size of button?

Does button size matter?

Yes, size matters. Button size is one of the most important factors to consider when designing touch screen applications. If buttons are too small, users may have difficulty tapping them accurately.

Should all buttons be the same size?

There is no need of maintaining same button sizes all over the site. you may need to have same sizes for similar functional buttons. the idea of the same size of the button is to maintain similarity so that user might understand in the first look.

What is the ideal size of button?

The size of a button also helps make it identifiable as one. Studies by the MIT Touch Lab suggests that 10mm x 10mm is the best minimum size for buttons due to the average size of fingertips. Designing buttons must not only be pleasing to the eye, but they also need to make tactile sense for the user.